#include<stdio.h>

int
main(void) {
	int i = 10;
	{
		int j = 10;
		printf("j = %d\n",j);
		printf("i = %d\n",i);
	}
	printf("i = %d\n",i);
	printf("j = %d\n",j);	//j is a undeclared identifier

	return 0;
}